WASHINGTON, Oct 12 (Reuters) - Palestinian Authority President Mahmoud Abbas will attend a summit to finalize an agreement aimed at ending the war in Gaza, an Axios reporter said on X on Sunday, citing a senior Palestinian official. The summit, which will be attended by U.S. President Donald Trump, will be held in the Egyptian city of Sharm el-Sheikh on Monday. (Reporting by Jasper Ward; Editing by Mark Porter) (The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)